davidlt/kernel-ark
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity
1b6dd252e6
kernel-ark/drivers
History
Philipp Reisner 1b6dd252e6 drbd: panic on delayed completion of aborted requests 
"aborting" requests, or force-detaching the disk, is intended for
completely blocked/hung local backing devices which do no longer
complete requests at all, not even do error completions.  In this
situation, usually a hard-reset and failover is the only way out.

By "aborting", basically faking a local error-completion,
we allow for a more graceful swichover by cleanly migrating services.
Still the affected node has to be rebooted "soon".

By completing these requests, we allow the upper layers to re-use
the associated data pages.

If later the local backing device "recovers", and now DMAs some data
from disk into the original request pages, in the best case it will
just put random data into unused pages; but typically it will corrupt
meanwhile completely unrelated data, causing all sorts of damage.

Which means delayed successful completion,
especially for READ requests,
is a reason to panic().

We assume that a delayed *error* completion is OK,
though we still will complain noisily about it.

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
2012-11-09 14:11:39 +01:00
..
accessibility
acpi Merge branch 'battery' into release 2011-08-05 22:16:42 -04:00
amba
ata Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6 2011-08-02 21:17:02 -10:00
atm atomic: use <linux/atomic.h> 2011-07-26 16:49:47 -07:00
auxdisplay
base PM / Runtime: Allow _put_sync() from interrupts-disabled context 2011-08-05 21:45:20 +02:00
bcma Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2011-07-25 13:56:39 -07:00
block drbd: panic on delayed completion of aborted requests 2012-11-09 14:11:39 +01:00
bluetooth
cdrom
char net: Compute protocol sequence numbers and fragment IDs using MD5. 2011-08-06 18:33:19 -07:00
clk
clocksource Merge branch 'timers-clocksource-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2011-07-23 10:34:47 -07:00
connector proc_fork_connector: a lockless ->real_parent usage is not safe 2011-07-28 18:26:32 -07:00
cpufreq Merge branch 'drm-core-next' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6 2011-07-26 09:21:09 -07:00
cpuidle cpuidle: stop depending on pm_idle 2011-08-03 19:06:37 -04:00
crypto n2_crypto: Attach on Niagara-T3. 2011-07-28 01:30:07 -07:00
dca
dio
dma Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx 2011-08-04 16:43:43 -10:00
edac atomic: use <linux/atomic.h> 2011-07-26 16:49:47 -07:00
eisa eisa/pci_eisa.c: fix BUG introduced by 005bdad7b8 2011-08-04 06:32:51 -10:00
firewire atomic: use <linux/atomic.h> 2011-07-26 16:49:47 -07:00
firmware Merge branch 'pstore-efi' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6 2011-08-02 21:18:39 -10:00
gpio Merge branch 'gpio/next' of git://git.secretlab.ca/git/linux-2.6 2011-08-01 06:13:48 -10:00
gpu Revert "drm/i915: Try enabling RC6 by default (again)" 2011-08-05 10:56:29 +01:00
hid
hwmon Merge branch 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/staging 2011-07-30 08:57:57 -10:00
hwspinlock
i2c i2c-eg20t : Fix the issue of Combined R/W transfer mode 2011-07-27 00:02:28 +01:00
ide drivers/ide/cy82c693.c: Add missing pci_dev_put 2011-08-04 01:30:34 -07:00
idle
ieee802154 IEEE 802.15.4: do not enable driver debugging by default 2011-06-30 16:18:09 +04:00
infiniband Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending 2011-07-27 13:21:40 -07:00
input Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2011-08-03 22:00:09 -10:00
iommu
isdn Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2011-07-28 05:58:19 -07:00
leds arch/arm/mach-ux500/board-u5500.c: calibrate ALS input voltage 2011-07-25 20:57:15 -07:00
lguest
macintosh
mca
md dm table: set flush capability based on underlying devices 2011-08-02 12:32:08 +01:00
media Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6 2011-07-30 00:08:53 -07:00
memstick
message Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6 2011-07-30 08:36:02 -10:00
mfd mfd: Fix mismatch in twl4030 mutex lock-unlock 2011-07-31 23:28:27 +02:00
misc atomic: use <linux/atomic.h> 2011-07-26 16:49:47 -07:00
mmc mmc: sdhci-esdhc-imx: add device tree probe support 2011-07-27 09:31:39 +08:00
mtd Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2011-07-25 13:56:39 -07:00
net Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2011-08-05 06:42:01 -10:00
nfc NFC: pn533: use after free in pn533_disconnect() 2011-07-26 16:27:24 -04:00
nubus
of Revert "dt: add of_alias_scan and of_alias_get_id" 2011-08-04 11:26:24 +01:00
oprofile atomic: use <linux/atomic.h> 2011-07-26 16:49:47 -07:00
parisc
parport Merge branch 'tty-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty-2.6 2011-07-25 23:09:27 -07:00
pci Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6 2011-08-02 21:17:02 -10:00
pcmcia Merge git://git.kernel.org/pub/scm/linux/kernel/git/brodo/pcmcia-2.6 2011-07-31 06:23:08 -10:00
platform acer-wmi: support Lenovo ideapad S205 wifi switch 2011-08-05 15:21:52 -04:00
pnp Merge 'akpm' patch series 2011-07-25 21:00:19 -07:00
power Merge git://git.infradead.org/battery-2.6 2011-07-31 06:24:50 -10:00
pps
ps3
ptp
rapidio
regulator Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lrg/voltage-2.6 2011-08-01 14:05:46 -10:00
rtc rtc-omap: fix initialization of control register 2011-08-03 14:25:20 -10:00
s390 [S390] qdio: Use kstrtoul_from_user 2011-08-03 16:44:21 +02:00
sbus atomic: use <linux/atomic.h> 2011-07-26 16:49:47 -07:00
scsi Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6 2011-07-30 08:36:02 -10:00
sfi
sh Merge branch 'sh-latest' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-3.x 2011-08-01 06:10:16 -10:00
sn
spi spi/pl022: remove function cannot exit 2011-08-02 14:54:11 +01:00
ssb Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2011-07-25 13:56:39 -07:00
staging Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6 2011-07-30 00:08:53 -07:00
target Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending 2011-08-03 15:12:09 -10:00
tc
telephony
thermal thermal: make THERMAL_HWMON implementation fully internal 2011-08-02 14:51:57 -04:00
tty sh: Fix boot crash related to SCI 2011-08-07 15:51:45 -07:00
uio Merge branch 'driver-core-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6 2011-07-25 23:06:24 -07:00
usb Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6 2011-07-30 00:08:53 -07:00
uwb
vhost atomic: use <linux/atomic.h> 2011-07-26 16:49:47 -07:00
video savagedb: Fix typo causing regression in savage4 series video chip detection 2011-08-06 12:02:40 -07:00
virt
virtio virtio: expose for non-virtualization users too 2011-07-23 16:20:30 +09:30
vlynq
w1 atomic: use <linux/atomic.h> 2011-07-26 16:49:47 -07:00
watchdog watchdog: Cleanup WATCHDOG_CORE help text 2011-08-02 08:23:07 +00:00
xen xen/self-balloon: Add dependency on tmem. 2011-08-03 14:34:57 -04:00
zorro
Kconfig Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc 2011-07-25 22:59:39 -07:00
Makefile Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc 2011-07-25 22:59:39 -07:00